Jahmai Jones
OFBoston Red Sox · AL · Age 28 · Bats R / Throws R · 111 PA
↑ Positive regressionBUYRank 225 of 527 hitters by opportunity score
Opportunity Score
16
+2.8 last 7 days
HOLDLong LeverageProduction matches the underlying process.
Most likely driver: plate-discipline erosion — expanding the zone (30% confidence).
G
60
PA
111
H
15
HR
3
R
9
RBI
9
SB
0
BB
11
SO
36
AVG
.150
OBP
.234
SLG
.260
OPS
.494
DefenseSprint 28.6 ft/s84p
Edge breakdown
Expected
What the batted-ball quality deserves
xBA.223
xSLG.390
xwOBA.304
xBABIP.281
Actual
What the scoreboard says
BA.150
SLG.260
wOBA.227
BABIP.197
Difference
Actual − expected · percentile of the gap
AVG vs xBA−.07398
SLG vs xSLG−.13098
wOBA vs xwOBA−.07798
BABIP vs xBABIP−.08493
Swing DNA & matchups
2026 bat tracking with league percentiles · matchups vs every pitch type, minimum 10 PA
Long Leverage
Long, fast swing — big damage on contact with real whiff exposure deep in counts.
The swing
Bat Speed73.1 mph70 pctl
Swing Length7.7 ft84 pctl
Fast-Swing Rate33.5%70 pctl
Squared-Up Rate22.0%37 pctl
Percentiles vs all tracked hitters. Attack angle/direction and tilt are swing-weighted averages across batting sides. Swing type from editable rules — first match wins.
vs pitch types
| Pitch | PA | wOBA | xwOBA | lg xwOBA | Whiff% | K% | RV/100 |
|---|---|---|---|---|---|---|---|
| 4-Seam Fastball | 32 | .289 | .361 | .327 | 27.1lg 22.0 | 25.0 | -1.3 |
| Changeup | 23 | .157 | .219 | .278 | 33.3lg 31.5 | 26.1 | -3.0 |
| Sinker | 22 | .400 | .494 | .351 | 13.8lg 13.7 | 13.6 | 2.9 |
| Slider | 12 | .133 | .103 | .288 | 63.0lg 33.5 | 66.7 | -2.4 |
xwOBA green/red when 20+ points above/below league vs that pitch. RV/100 = run value per 100 pitches seen (positive favors the hitter). Source: Savant pitch arsenal stats.
Recent games
Percentile rankings
xwOBA
51
Hard-Hit%
75
Barrel%
70
Avg Exit Velo
84
Bat Speed
71
K%
11
BB%
69
Chase%
58
30-day rolling trends
Rolling wOBA vs xwOBA
wOBAxwOBA
Rolling Hard-Hit%
Rolling Barrel%
Rolling Exit Velocity
Rolling Whiff%